How Long Does Commercial Construction Take in Sydney?
Construction timelines by project type, what causes delays, and whether your project needs a DA — from a licensed Sydney commercial builder.
Direct answer: A small office or retail fitout takes 6–10 weeks from DA approval to handover. A mid-size office fitout (300–500sqm) takes 10–14 weeks. A childcare centre (500–700sqm) takes 16–24 weeks from construction start. Add 8–20 weeks for design, DA, and approvals before construction begins. These are construction-phase timelines only — total project time from brief to opening is 6–18 months depending on project type.
Timelines by Project Type (Construction Phase Only)
| Project Type | Size | Construction Duration |
|---|---|---|
| Small office or retail fitout | Under 200sqm | 6–10 weeks |
| Mid-size office fitout | 300–500sqm | 10–14 weeks |
| Large office fitout | 700sqm–full floor | 14–22 weeks |
| Retail tenancy fitout | 100–400sqm | 6–12 weeks |
| Medical or dental suite | 150–300sqm | 10–16 weeks |
| Childcare centre — new build | 500–800sqm | 20–30 weeks |
| Childcare centre — tenancy fitout | 400–700sqm | 16–24 weeks |
The Time Before Construction Starts
The timelines above cover the construction phase only — the period from when your builder starts on site to when they hand you the keys. Before that, your project goes through design, council approvals, and contractor procurement. That process takes:
- Architectural design: 4–10 weeks depending on project complexity
- DA (Development Application): 8–20 weeks at council, more in some LGAs
- CDC (Complying Development Certificate): 14–30 days if your project qualifies
- Exempt Development (minor works): No DA required — construction can start once design and engineering are signed off
For a childcare centre, add the ACECQA service approval process — which can run in parallel with construction but requires documentation submitted before the build completes.
What Actually Causes Delays
In our experience, the two most common causes of commercial construction delays in Sydney are scope changes after construction starts, and incomplete design documentation handed to the builder. A variation mid-programme doesn’t just add time for that particular change — it disrupts the schedule for every trade that follows. The best protection against timeline blowout is a complete set of approved drawings before construction starts and a clear variation approval process in the contract.
The second-most common cause is subcontractor availability. Sydney’s commercial construction market is active — licensed electricians, hydraulic plumbers, and specialist fit-out trades can be booked weeks in advance. A builder who starts procurement late pushes everything back.
The Programme Is Your Insurance Policy
A construction programme is a document that shows which trades are on site in which weeks, what the milestone dates are, and when practical completion is targeted. A contract without a programme attached gives you no mechanism to hold the builder to a timeline. If your builder doesn’t produce a programme before you sign, ask for one. If they can’t or won’t provide one, that’s a clear signal.
For a discussion about your project timeline, call Jay Singh directly on 0451 151 336.
Commercial Construction Enquiry
Licensed NSW builder. Programme with every contract. Jay responds within one business day.